Chain link



FIG. 1 is a perspective view of a chain link showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view taken from the right of FIG. 2;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a side elevational view taken from the left of FIG. 2;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof. 

The ornamental design for a chain link, as shown and described. 